You feel surprised when you weren’t expecting something. Some surprises are fun, and some are not.

“I feel surprised by…”

“I wasn’t expecting…”

“I can’t believe that…”

“I would like to…”
“…have something explained to me.”
“…not be surprised again, I didn’t like it.”
“…be surprised again, it was fun!”
“…give someone else a fun surprise!”
“…I don’t know what I want.”